Tripping mechanism



. G. IVI. JOHNSON. TRIPPING MECHANISM. APPLICATION mso 1AN.2a`.1sJ2l.

Patented 12.51.28; 1922.

2 sHEETs-sHEET 1.

G. M. JOHNSON.

TR|PP|NG MEcHANlsM.

APPLICATION FILED JAN-28, I92I.

l Wmv Ess 7` Petented Feb. 2s', 1922.

2 SHEETS-SHEET 2- INvsm-OR GEORGE M. JOHNSON, 0F JEANNETTE, PENNSYLVANIA.

TRIPPINVG MECBANISM.

Specification of Letters Patent.

Patented Feb. 2s, 1922.

Application filed. January 28, 1921. Serial 110.540,68?.

v but it is to be understood that the tripping characters mechanism in accordance with this invention' can be employed for any purposes wherein it is found applicable, and the invention has for its object to provide a mechanism for the purpose set forth, having means, in a manner as hereinafter referred' to, positioned in the path of a car or other travelling body whereby the impact from the car orl travelling body will actuate the said means to cause the operating ot the tripping mechanism to release therefrom, the element or mechanism vwith which it is associated, by way of example a feeding mechanism for mine cars, so that the latter mechanism can be restored to its normal position.

Further objects of the invention are to provide a tripping mechanism, in manner as hereinafter referred to, which is simple in its construction and arrangement, strong, durable, eiiicient and positive in its action, automatically returnable to normal position, readily set up and comparatively inexpensive.

With the foregoing and other objects in view the invention consists of the novel construction, combination and arrangement ot parts, as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference denote corresponding parts throughout the several views Figure 1, is a top plan View of a tripping mechanism in accordance with this invention.

Figure 2, is a side elevation 0i' the mechanism illustrating the trip lever adapted to be actuated by a car wheel.

Figure 3, is a longitudinal sectional view.

Figure 4, is a section on line IV--IV'Figure 2. i

A tripping mechanism in accordance with this intention can be employed Jfor either holding a mechanism in operative or inoperative position and is designed when actuated to release such mechanism so it can be restored either to operative or inoperative position as the case may be. By way of example at 5, Figure 1, is shown a portion of the operating mechanism 'for a pair of car stop blocks employed in connection with a feeding mechanism 'for mine cars, the tripping mechanism holding such operating mechanism so4 that the feeding mechanism will be retained in inoperative position until the tripping mechanism is actuated to release the element 5 of the operating mechanism. The element 5, is providedfwith a shoulder 6, against which abuts the nose 7,

of a retaining plate 8, which is mounted on a suitable support or a shifting mechanism employed for the purpose of actuating the operating mechanism for the car stop blocks.

vThe tripping mechanism is positioned at one of the rails of a. track for a travelling body, a minecar, so that during the travel` of the car, the tripping mechanism will be actuated. The track raii is formed of two spaced sections 9, 10 andthe opening between the sections 9, 10 is closed by a tread member 11 having a depression 11 at one end.

Arranged at the outer side of the sections 9, 10, is a iish plate 12, having a vertical flange 13, which is offset, as at 141, intermediate its ends and that portion ot the plate 12 bounded by the oiset 14 is out away to provide an opening 14. The plate 12, is secured to the ties 15, as at 16, and to the sections 9,10 as at 17. The Harige 13 is Hush with the treads of the rail sections. The tread member 11 has its inner side provided with a iish plate 18, and which abuts against the headsof the rail. sections. The plate 18, is secured to the ties 15 as at 19, and the securing means between the section 9, 10 and fish plate 18, are employed to secure the fish plate 18 to the rail sections. Depending from the plate 13, belowkthe opening 11, is a hanger 20, and depending from the plate 18, below the opening 11 is a hanger 21 dournalled in the lower ends of the hangers 20, 21, is a shaft 22, which projects inwardly from the hanger 2l. Fixed to the shaft 22, and extending upwardly through the opening 14 is a trip lever 23, having a lateral projection 24 positioned in the path of a travelling body, as shown a car wheel 24J, so that as the Car moves over the track the wheel 2e will move the lever 23, to the position shown in Figure 3. The projection 24, conforms in contour to the shape of the tread of al rail section when the lever is shifted the projection 24 seats in the depression ll and forms a continuation of the rail tread.

The extended end of the shaft 22, is provided with a crank 26, which is pivotally attached to a spring controlled pull bar 27, the latter traveling in a guide 28, which also provides an abutment for a controlling spring 29, .which is associated with the bar 27. Theforward end of the bar 27 is enlarged, as at 30, and interposed between said enlargement and the guide 28, as well as surrounding' the bar 27, is the controlling spring 29` The enlarged end 30, of the bar 27, is bifurcated, as at 31, and which overlaps the plate 8, the latter beingprorided with a slot 32, and extending therethrough is a pin 33, which is carried by the end 30, of the bar 27.

The function of the spring 29, is to return the tripping mechanism to normal position, after the lever 23, has been shifted by the car wheel or wheels and when pressure has been removed from the lever. The positioning` of the projection 24, in the path of the car, allows for the operation of the g lever not only by the forward, but the rear wheel of the car, therefore'it is obvious that if for some reason the bar 27 was not shifted by the actionrof the forward wheel of the car it would be actuated by the rear wheel.

What I claim is l. A tripping mechanism comprising a trip lever having its upper end enlarged to provide a portion of a rail tread, a shaft having thelower end of the lever fixed thereto, a spring controlled pull bar connected to the shaft a pivoted retainingplate, and a pin andv slot-connection between the bar and plate.

2. A tripping mechanism comprising a trip lever having its upper end enlarged to provide" a portion of a rail tread, when the lever is depressed, a shaft having the lower` end of the lever fixed thereto, a` crank on the shaft, a pull bar attached to the crank, a'pivoted retaining plate, and a pin and slot connection between the plate 'and bar.l

Inn a` tripping mechanismv the `combination with a-pair of spaced track rail sections, a tread member between said sections and havingv ay depression, and fish plates secured to saidv sections, of a trip lever arranged at the side of the tread4 member and having its upper end provided with av proj ection forming a part ofV a rail tread' when seated in the depression. a shaft having the lower end of the lever fixed thereto, and avv spring controlled pull bar connected with the shaft.

In testimony whereof I affix my signature.

GEORGE M.JoHNsoN. 

